I am not related to these Allen's but found the following in a book I have called "History of the Pioneer Families of Missouri" by Wm. S. Bryan and Robert Rose, first published in 1876. I thought it might be of some help to someone researching the Allen family.
Pages 126 and 127.
ALLEN---William Allen, of Henry County, Virginia, was married twice. The name of his second wife was Ann Smith, by whom he had Susan, Robert, Joseph, Pines and Frances. Susan married William Wells, who was Probate Judge of Henry County, Virginia. Robert was a talented man, and a fine orator, and represented his native county in the state Legislature for many years. He married Celia Mullens, and their son, William L., was State Senator in Mississippi for a number of years. Joseph S., the second son of Robert Allen, was a distinguished Methodist minister. He settled in St. Charles County, Missouri in 1828. He was married twice, and by his first wife he had one son, named William. The name of his second wife was Rachel May, andthey had William M., Robert L., Elizabeth M., John P., Joseph J., Susan A., and Rachel. William M. married Mary M. Shelton, and they had six children. Mr. Allen represented his county in the House of Representatives four years, and four years in the State Senate. He was a prominent and influential citizen, and now resides in Wentzville, Missouri. Robert L. was married first to Anna Pendleton, by whom he had five children. After her death he married Louisa B. Harnett, and they had three children. Mr. Allen was County Judge of Warren County, Missouri for some time, and represented that county in the Legislature two years. Elizabeth M. was married first to Henry Simpson, and after his death she married J. D. May. She had three children. John P., who was a physician, married his cousin, Martha L. Allen, and they had one child. Joseph I. came to Missouri in 1850, and died soon after. Susan A. died unmarried---Pines, son of William Allen, was married first to Charlotte Bailey, of Tennessee, and settled in St. Charles County, Missouri in 1829. Their children were---Robert B., Mary J., Joseph J., John B., Charles C., and Martha L. Mr. Allen was married the second time to Nancy Hughes, of Virginia, and they had Lucy A., Susan M., Pines H., William M., Smith B., and Columbus S. Robert B. married Louisa Chambers, and they had ten children. He was a prominent Methodist, and an influential citizen. Mary J. married Marshall Bird, who settled in Missouri in 1833. They had seven children. Joseph J., married Sarah McClenny, and they had three children. John B. was married first to Elizabeth Lacy, by whom he had four children. He was married the second time to Lucy Harnett, and they had five children. Mr. Allen is an attorney, and lives near Flint Hill. He was a soldier in the Black Hawk War. Charles C. married Fanny Pendleton, and they had but two children. Martha L. was married first to John Taylor, and they had one child. She was married the second time to Thomas H. Lacy. They had no children.
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