Appears that his parents are Eliphat and Eliza/Elizabeth Garde.
Connecticut, Marriages, 1729-1867
Groom's Name: Lyman Guard
Groom's Birth Date: 1851
Groom's Age: 36
Bride's Name: Ella A. Mitchel
Bride's Birth Date: 1867
Bride's Age: 20
Marriage Date: 09 Jun 1887
Marriage Place: Groton, New London, Connecticut, United States
Indexing Project (Batch) Number: I04438-3
System Origin: Connecticut-EASy
Source Film Number: 1306249
Reference Number: p338
Connecticut, Births and Christenings, 1649-1906
Name: Lyman Guard
Gender: Male
Birth Date: 17 Dec 1851
Birthplace: Groton, New London, Connecticut
Father's Name: Eliphalet Guard
Mother's Name: Eliza
Indexing Project (Batch) Number: I04437-9
System Origin: Connecticut-EASy
Source Film Number: 1306249
Reference Number: p13
From familysearch.org