Mary's parents were:
David Henderson, a coal miner, b. Dec. 28, 1811 in Muirkirk, East Ayshire, Scotland and d. 1849 in St. Louis County, MO. &
Margaret Ada (Adam) Henderson, b. Aug. 12, 1816 in Hamilton, Old Monkland, South Lanarkshire, Scotland and d. Aug. 12, 1900 in San Bernardino, San Bernardino county, CA.

Margaret & David Henderson's children were:
1) William McDonald Henderson, b. Nov. 17, 1833/34 in Coatbridge, North Lanarkshire, Scotland and d. Sep. 11, 1904 in Long Beach, Los Angeles county, CA. (William marr. Mary M. Winn)
2) Isabel/la Henderson Henderson, b. Mar. 10, 1835 in South lanarkshire, Scotland and d. Aug. 4, 1890 in San Bernardino, San Bernardino county, CA. Isabella marr. William Nish.
3) Margaret Victoria Henderson, b. Jul. 26, 1837 in Glasgow, Scotland and d. Sep. 6, 1921 in San Bernardino County, CA. She marr. Charles J. Mogeau and after his death, Henry C. Yager.
4) David Glen Henderson, b. Mar. 28, 1842 in New Monkland, North Lanarkshire, Scotland and d. Jul. 19, 1926 in Fontana, San Bernardino county, CA. He marr. Matilda Caroline Hawker.
5) Jeannette Adam Henderson, b. Jun. 7, 1844 in Calder, Old Monkland, North Lanarkshire, Scotland and d. Dec. 8, 1936 in Ontario, San Bernardino, CA. She marr. Thomas 'Tom' B. Walkinshaw, and later, William Brown Roberds of Corona, CA.
6) Mary Adam Henderson, b. May 27/31, 1848 in Scotland and d. May 24, 1904 in Los Angeles, Los Angeles county, CA. She marr. William Roberts Levick and then Thomas H. 'Tom' Ashcroft of Corona, CA.
7. Charles Henderson, who died as an infant.

*Note: After Margaret (Adam) Henderson's first husband, David Henderson died in St. Louis, MO. of a heat stroke (or cholera), Margaret became the plural wife of her sister Agnes' husband, John/James Easton. It was the Mormon custom that no woman of age remain unmarried, and this was most likely preferable to having a husband chosen for her by the Mormon Church. From this child, one child was born: John Alexander Easton who later changed his last name to Henderson. John Alexander Henderson was b. May 29, 1856 in San Bernardino, San Bernardino County, CA. and d. Mar. 28, 1938 in San Bernardino, San Bernardino County, CA.

Mary Adam Henderson was born in Scotland. When she was a small child (age 2), her parents, David and Margaret packed up their family of six children and joined the Easton and extended Adam family to sail from Glasgow, Scotland to Liverpool, England to America, the land of promise.
The ship crossed the Atlantic, to the south of the Florida Peninsula into the Gulf of Mexico. From there, the family took a boat up the Mississippi, settling in St. Louis, Missouri.
They planned to stay about a year, long enough to save up for provisions, and a wagon and oxen team for the trip west. Mary's father, David, died shortly after from heat stroke (or cholera) while working in the coal mines near St. Louis and was buried in what is now called Dogtown.
After her father's death, Mary's mother, Margaret, became the plural wife, for a time, of James Easton (the husband of Margaret's sister). They made the trip west to Salt Lake, then to Cedar City and finally settled in San Bernardino, Ca.
Mary married, first, William R. Levic(k) in San Bernardino, Ca. They were divorced June 15, 1874. She then married Thomas H. Ashcroft.

In the Oct. 24, 1850 U.S. census, 3 yr. old Mary Henderson, b. in England(Scotland), was living in the South Half of St Louis, St Louis, MO. with her
34 yr. old widowed mother, Margaret Henderson, b. in England (Scotland)
13 yr. old sister, Margaret Henderson, b. in England (Scotland)
8 yr. old David Henderson, b. in England (Scotland)
5 yr. old sister, Jeannette Henderson, b. in England (Scotland)
Living next door were Margaret's 27 yr. old sister, Agnes (Adam) Easton, Margaret's 27 yr. old brother-in-law and future husband, James Easton and their 2 yr. old daughter, Margaret Easton.

In the 1860 U. S. census, 13 yr. old Mary Henderson, b. in Scotland, was attending school and living in San Bernardino, San Bernardino, CA. with her
43 yr. old widowed (inferred) mother, Margaret Henderson, b. in Scotland
18 yr. old (inferred) brother, David Henderson, a laborer, b. in Scotland,
16 yr. old (inferred) sister, Jennett Henderson, attending school, b. in Scotland
4 yr. old (inferred) (half)-brotherJohn Henderson, b. in CA.
Margaret's real estate was valued at $150 and her personal property at $150.

On Dec. 24, 1864, Mary Henderson and William Roberts Levick were married in San Bernardino, CA.
They must have divorced because William died in 1905, and Mary married Thomas Ashcroft in 1875.

In the 1870 U. S. census, 23 yr. old Mary Levick, b. in Scotland, was keeping house and living in Chino, San Bernardino, CA. with her
37 yr. old (inferred) husband, William Levick, a brick mason, b. in Wales
Mary and William's parents were all of foreign birth.
William's real estate was valued at $400 and his personal estate was also valued at $400.

On Dec. 19, 1875, Thos. Ashcroft and Mary Henderson were marr. in San Bernardino County, according to California, U.S., County Birth, Marriage, and Death Records for 1849-1980.

In the 1880 U. S. census, 31 yr. old Mary Ashcroft, b. in Scotland, was keeping house and living at 86 8th St. in San Bernardino, San Bernardino, CA. with her
28 yr. old husband, Thos. Ashcroft, a farmer, b. in IA.
33 yr. old boarder and sister-in-law, Jane E. Vine, who was sick with bronchitis, b. in IA.
Mary's parents were both b. in Scotland
Thomas & Jane's parents were both b. in England.
Mary & Thomas Ashcroft were living next door to her brother, D. G. & sister-in-law, Matilda Henderson and their 7 children.

In the 1900 U. S. census, 51 yr. old Mary A Ashcroft, b. May 1849 in Scotland, was living in Corona, Riverside, CA. with her
48 yr. old husband, Thomas H Ashcroft, no occupation listed, b. Mar. 1852 in IA.
21 yr. old married adopted daughter, Mattie Kinney, a fruit sorter, b. May 1879 in CA.
15 yr. old hand, Burk Burris, attending school, b. Sep. 1884 in KS.
Mary and Thomas had been marr. for 25 yrs.
Mary had never had children.
Mattie had been marr. for 1 year and had not yet had any children.
Mary's parents were both b. in Scotland.
Thomas' parents were both b. in England.

The Weekly Sun (San Bernardino, CA.), P. 3, Fri., May 27, 1904
Mrs. Mary Ashcroft, wife of Thomas Ashcroft of Corona, and one of the old time settlers of San Bernardino, died in the California Hospital in Los Angeles at 6 o’clock last evening, the result of an operation. Her husband and her brother, Officer John A. Henderson of this city, were with her at the time of death.
Mrs. Ashcroft had been ill for a month at her Corona home, and a week ago was taken to Los Angeles for treatment, an operation being the only hope. She was 55 years of age and a native of Scotland.
Mrs. Ashcroft was raised in San Bernardino and enjoyed friends and acquaintances without number throughout the valley. She had lived in Corona for the past several years.
Besides the husband and Mr. Henderson of this city, she leaves a brother, William McD. Henderson of Rialto; another brother, D.G. Henderson of Imperial, and two sisters, Mrs. William Roberts or Corona and Mrs. Margaret Yager, whose home is on the Rialto terrace.
Mrs. Ashcroft was a strong and noble character, and an earnest Christian woman. She was one of the active members of the Baptist church in Corona, and known far and near for her good deeds and wide influence for the right.
The funeral will take place from the late residence in Corona, probably tomorrow. Interment will be in the San Bernardino cemetery.