Question: This American poet, born in 1830, was the sister in law of Susan Huntington Gilbert Dickinson? 

Context paragraphs:
Emily Dickinson International Society: The Emily Dickinson International Society (EDIS) is an international organisation relating to American poet Emily Dickinson (1830–1886).  It was founded in 1988 and its aim is to "Promote, perpetuate and enhance the study and appreciation of Emily Dickinson worldwide".

Debbie Dickinson: Debbie Dickinson (born December 30, 1957) is an American actress and fashion model.  The youngest of three sisters, Dickinson is of Belarusian and Polish descent.  Debbie began modeling in 1975 with Elite Model Management in Paris, France joining her sister, supermodel Janice Dickinson.

Susan Huntington Gilbert Dickinson: Susan Huntington Gilbert Dickinson (December 19, 1830 – May 12, 1913) was a writer, poet, traveler, and editor, as well as the sister in law of the American poet Emily Dickinson.  Born in Old Deerfield, Massachusetts Susan was the youngest of six children, born to Thomas and Harriet Arms Gilbert.

There is a pain — so utter —: "There is a pain — so utter —" is a poem written by American poet Emily Dickinson.  It was not published during her lifetime.  Like many of Dickinson's poems "There is a pain - so utter -" was substantially changed when it was first published in 1929.  The original version with Dickinson's typical dashes was restored by scholar Thomas H. Johnson for his 1955 edition of "The Poems of Emily Dickinson".

Kate Dickinson Sweetser: Kate Dickinson Sweetser (1870-1939) was an American author known in her time for writing juvenile fiction and compilations.  She was born in New York City to Charles H. and Mary N. Sweetser.  Her great-grandfather, Samuel Dickinson, was one of the founders of Amherst College in Massachusetts; she was also the cousin of poet Emily Dickinson.

Susan E. Dickinson: Susan E. Dickinson (August 25, 1832 – November 16, 1915) was an American journalist and the older sister of lecturer Anna Elizabeth Dickinson.

Homoerotic poetry: Homoerotic poetry is a genre of poetry implicitly dealing with same sex romantic or sexual interaction.  The male-male erotic tradition encompasses poems by major poets such as Abu Nuwas, Walt Whitman, Federico García Lorca, W. H. Auden, Fernando Pessoa and Allen Ginsberg.  In the female-female tradition, authors may include those such as Sappho, "Michael Field", and Maureen Duffy.  Other poets wrote poems and letters with homoerotic overtones toward individuals, such as Emily Dickinson to her sister-in-law Susan Huntington Gilbert.

Emily Dickinson Museum: The Emily Dickinson Museum is a historic house museum consisting of two houses: the Dickinson Homestead (also known as Emily Dickinson Home or Emily Dickinson House) and the Evergreens.  The Dickinson Homestead was the birthplace and home from 1855–1886 of 19th-century American poet Emily Dickinson (1830–1886), whose poems were discovered in her bedroom there after her death.  The house next door, called the Evergreens, was built by the poet's father, Edward Dickinson, in 1856 as a wedding present for her brother Austin.  Located in Amherst, Massachusetts, the houses are preserved as a single museum and are open to the public on guided tours.  The Emily Dickinson Home is a US National Historic Landmark, and properties contribute to the Dickinson Historic District, listed on the National Register of Historic Places.

Emily Dickinson: Emily Elizabeth Dickinson (December 10, 1830 – May 15, 1886) was an American poet.

Lavinia Norcross Dickinson: Lavinia Norcross Dickinson (February 28, 1833 – August 31, 1899) was the younger sister of American poet Emily Dickinson.

Supporting paragraphs: Susan Huntington Gilbert Dickinson Emily Dickinson
Answer: Emily Dickinson