The Welsh farmers that settled Llanerch include the names Bewley, Davis, Albertson and Taylor.

[8][9] The 1895 subdivision development in Llanerch was one of the Township's first, with twelve dwellings constructed by architects Robert G. Kennedy and Frank A. Hays who both resided in the neighborhood.

[11] The two purchased 200 acres of "beautiful rolling ground" from businessman Henry Albertson, with the highest point of the site allowing a view of Philadelphia City Hall.

[13][14][15] The new subdivision was planned with "Telford roads, granolithic pavements, under drains, [and] electric lights" with a minimum lot size of 50 by 150 feet.

[16] The streets were laid out to magnify the distance between one home and next, offering focal points and a sense of destination between houses.

Most of the early subdivisions in Haverford, such as Preston, Millbrook, South Ardmore, Brookline, Beechwood and Penfield, were streetcar suburbs along trolley and train lines that served as a key mode of transportation.

It began over disagreements over the right to string electrical wires for intersecting train lines and the laying of tracks.

[21][22][23] There is a memorial to the historical background involving the case in the form of Llanerch Crossing, a small park with a mural and markers detailing the history of the feud.

[25][26] The same association held a "mass meeting" in 1910 to protest the Springfield Water Company that raised rates in three counties.

[27] In 1916, a group of Llanerch residents pushed to create an independent borough, carved out of Haverford Township.

The group, citing an irritation of "not getting back enough in betterments for the amount of taxes it pays into the Township treasury.

In 1981, a civic group called RAG (Residents Against Garbage) was formed in Llanerch to protest turning the abandoned quarry - a site of 32 acres of which 22 was a hole at its deepest point 300 feet - to a sanitary landfill, citing the present issue of "rats as big as cats".

[34] The quarry was a persistent eyesore and liability for the Township, including the site of a small airplane crash, until its fill and conversion to a shopping center in the 2010s.