Gebo/Jensen Family Search

I am looking for information on the surnames; Gebo and St. John. Levi Gebo born in Plattsburg, Jan. 16, 1865 d. July 26, 1951 in Groton, MA and married to Charlotte (Lottie) St. John also born in Plattsburg, NY b. 1876 d. Jan 18, 1921 in Clinton MA. They had 8 children, Phoebe, Philip, Sylvester, Fredrick Pearly, Victor, Herbert, Doris and Carrie (died as an infant). I believe Levi's parents to be John Gebo Sr. b. abt. 1827 and mother Eliza b. abt.1836. I have hit a road block here. I am thinging that Eliza might be short for Elizabeth but not sure.
Any information would be appreciated. I am also willing to share any information that I have on the Gebo line.

On the other side I am looking for information on my grandparents on both sides. My father Herbert C. Jensen (b. April 12, 1899 d. June 10, 1958)was one of nine children born to Peter F. Jensen and Thyra Hansen Jensen. Both his parents were born in Cophengan, Denmark. Birth and Death dates unknown. I do know they lived in West Falmouth, Maine in 1899 as that is where my father was born. Any infomation would be appreciated.