Who was Atlantic English Thomsen?
She was born 14th December 1869.
The name gives a clue as to where she was born but not the ship.
Who were her parents? siblings? etc

She married in 1889 to Charles Peck - 1st born of 11 children of Charles Peck and Annie Gaskin.
He was born in Lower Hutt 1863 and died in Palmerston North 1958.

They separated and she then married Archibald Albert Boswell, 1 of 12 children to Charles Llewellyn Boswell and Annie Elizabeth White.
He was born 1883 in Auckland and died 1969.

Charles married twice more ...

The only known child of Atlantic's and Charles was Wilfred Norman Peck born in Palmerston North in 1890 - died 1961 in Dannevirke

Did she have more children?