Yes, Andy Grammer and Kelsey Grammer are related to each other.  

According to IMDb, the singer Andy is Kelsey's third cousin. However, they have not discussed their bonds openly in the media.

Born in Saint Thomas in the Caribbean Sea, Kelsey's life is marked by traumatic incidents. His father was murdered by intruders and his two half-brothers died in an accident while scuba diving. 

Kelsey was very close to his sister Karen but she was raped and murdered during her late teens. After that, he was extremely devastated and depressed and got into substance abuse. 

Despite his successful showbiz and political career, Kelsey had an unsuccessful married life three times. He has tied the knots four times and has seven kids altogether. He is living with his fourth wife Kayte Walsh. 

On the flip side, Andy had quite a content childhood. He started writing songs when he was 15 and would play guitar and piano. 

The singer graduated with a B.A. degree in the music industry from the California State University, Northridge. His debut single Keep Your Head Up was one of the innovative video creations and won numerous accolades. 

Growing up, Andy received immense support in his singing career from his parents and family. 

Andy was born in Los Angeles to Kathryn Willoughby and the singer Robert Crane Grammer, known by his stage name Red Grammer.

Red is mostly famous for writing children's songs. In 2005, his album Be Bop Your Best was nominated for the prestigious Grammy Awards. 

Andy's mother Kathryn was of German descent and was a women's rights activist. She passed away because of cancer. Her best friend Leigh is also Andy's Godmother and Andy has dedicated the song Saved My Life to her. 

The singer is married to the musician Aijia Grammer and has two children together. They currently live in Los Angeles. 

The pop singer Andy is very active on his Instagram handle @andygrammer.

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Andy has a verified account with over 432K followers on Instagram. He frequently updates the audience about his new albums and shares his family life too.  

Grammer recently posted a cheerful video of his wife with a long caption on her birthday. He spends most of his time with his family and it is evident from his Instagram posts.

He shares the photos and videos of his toddlers, Louisana and Izzy, and feels very grateful to be their father.