How Are These Two DNA Shared Matches Related to Each Other?

My husband shares 20 cM across 2 segments with one of his DNA matches. I wanted to figure out their relationship because the surname Ungi from the match’s pedigree chart was familiar to me. I had seen it on family records originating in Gyoma, Hungary where my husband’s paternal grandparents were born.

I was also curious because this 20 cM-match was a shared match with someone else, a 143 cM-match that I found several years ago – without using DNA.

I started with the 20cM-match’s pedigree chart. There was a great-grandmother (Ungi Juliánna) who died 7 March 1950 in Hahót, Hungary and had been born 29 years earlier (about 1921) in Gyoma. Eventually, I was able to make this diagram showing the relationship between my husband’s two matches.

I didn’t make a separate chart, but my husband and his 143 cM match are 2nd cousins once removed.

Here are the supporting documents I used to make the chart. (You will need to be signed into a free FamilySearch account to see these records) Names on the chart are in bold:

Hahót, Zala civil registration death record line 12, Ungi Juliánna, died 7 March 1950, age 29, from drowning. Her husband was Domján István. Her parents were Ungi Zsigmond and Kéri Mária.

Gyoma Marriage Civil Registration, Page 102, Date 10 December 1898, Groom Ungi Zsigmond, born 16 August 1874, the son of the late Ungi Lajos and Kéri Juliánna. Bride Kéri Mária, born 25 March 1879, the daughter of Kéri István and Szalóki Zsuzsánna.