The 19th century didn't go so well for the church

[Peter]

The 19th century brought us

Mary Baker Eddy - Christian Science
Joseph Smith - LDS Mormon
Charles Taze Russell - Jehovah's Witness
William Miller - The Millerites
Ellen White - SDA Seventh Day Adventists
Edward Irving - Irvingites
John Nelson Darby - dispensationalism futurism Borrowed from Irving and bequeathed to C.I. Scofield of the Scofield annotated Bible. (Dr. Harry Ironside on futurism)
Dr. John Thomas - Christadelphians
Georg W. F. Hegel - Idealism school of eschatology (adopted by Karl Marx) (PDF)
Westcott and Hort - wrote corrupt 19th century minority Greek text that is the basis of the majority of modern bible versions.
Charles Parham  United Oneness Pentecostal Church -  a few individuals 19th and 20th century
Messianic Judaism - 19th-20th centuries and again in the 1960s
Pope Pius IX - 1854 dogma of the "immaculate conception"
The 19th century also brought us:
Madame Blavatsky - Theosophical Society - satanist acquaintence of Westcott and Hort

Not restricted to the 19th century the ecclesia also suffered:
Constantine - Roman Catholicism - 3rd-4th century, 13th century dogma of auricular confession, 1950 dogma of the "assumption of Mary", RCC style doctrine of apostolic succession, transubstantiation, infallibility of papal decree, and on and on.

Ribera - futurist doctrine creator and seed for Darby's doctrine 16th century
Alcazar - preterist doctrine 17th century
Jean de Labadie - millennial reign 17th century
Manuel de Lacunza - middle man between Ribera and Darby 18th century

2Pe 2:1 But there were false prophets also among the people, even as there shall be false teachers among you, who privily shall bring in damnable heresies, even denying the Lord that bought them, and bring upon themselves swift destruction.

2Ti 4:3 For the time will come when they will not endure sound doctrine; but after their own lusts shall they heap to themselves teachers, having itching ears; 4 And they shall turn away [their] ears from the truth, and shall be turned unto fables.

2Corinthians 11:3 But I fear, lest by any means, as the serpent beguiled Eve through his subtilty, so your minds should be corrupted from the simplicity that is in Christ. 4 For if he that cometh preacheth another Jesus, whom we have not preached, or [if] ye receive another spirit, which ye have not received, or another gospel, which ye have not accepted, ye might well bear with [him].

http://www.beholdthebeast.com/traditional_framework.htm#cults