Thank you.
Based on what I'd found, I came to the following conclusions -
Mary Eva Marke's parents were:
Emily SELWOOD b. circa 1860 (West Buckland), d. 1937 (Taunton), married in 1879 to William MARKE b. circa 1857 (West Buckland), d. 1934 (Taunton). Together, they had 5 children: Alfred, Walter, Ethel, Mary and Samuel.
Emily Selwood's parents were:
Jane BROOM b. 1821 (West Buckland), d. 1885 (Wellington), married in 1848 to Elias SELWOOD b. 1821 (West Buckland), d. 1907 (Wellington). Together, they had 7 children: Sarah Jane, Elizabeth, William, Albert Henry, Anna Maria, Edwin, and Emily.
Jane Broom's parents were:
Elizabeth HARRIS b. 1821 (West Buckland), d. 1885 (Wellington). She was married to William BROOM b. circa 1790, d. circa 1860. Together they had 3 children: Jane, Sarah and Elizabeth.
Mary Eva Marke's husband, Elias, appears to be the child of John SELLWOOD (alt. spelling) b. 1792 (West Buckland), d. 1877 (West Buckland) and Grace MARKS b. 1799 (West Buckland), d. 1854 (Wellington).
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Mary Eva Marker's FATHER, William Marker's parents were:
Stephen MARKE b. 1831 (West Buckland), d. 1902 (Wellington) - not sure about his wife.
There appears to be another possible Stephen who comes from Wales as a contender; however, I do not believe anyone on my mother's side is Welsh. I do have Welsh connections on my father's side.