In Christian Kabbalah, Johann Reuchlin (1455–1522) considered the 72 names - made pronounceable by adding the suffixes "El" or "Yah" - to be the names of angels: individuated products of God's will. He lists these "72 Angels of the Shem HaMephorash" in his De Arte Cabbalistica (1517), which greatly influenced later Hermetic works including those of the Golden Dawn. More info on the Shem HaMephorash wikipedia page.
The material here is taken from The Science of the Kabbalah (English title) by Lazare Lenain (1823; digitized by Google Books), passed through OCRmyPDF (output.txt), and translated with Google Translate. This was done in an effort to provide a Copyright-free version of this material, however, a much better translation exists:
We highly recommend the translation by Piers A. Vaughan (Amazon link), who has not only provided an outstanding work, but also provided free, high quality images of the sigils on his blog, in this post and this post.
The sigils will be added at a later time.
1. Vehuiah (Mar 21 - Mar 25)
|Angel (genius):||Vehuiah | והויה|
|Attribute:||God is High and Exalted above all things.|
|Angelic order:||Seraphim | שרפים|
|Governs:||0-5° of Aries (1st quinant)|
Mar 21 - Mar 25
|Presiding Days:||Mar 20, Apr 30, Aug 11, Oct 22, Jan 2|
2. Jeliel (Mar 26 - Mar 30)
|Angel (genius):||Jeliel | יליאל|
|Governs:||5-10° of Virgo (2nd quinant)|
Mar 26 - Mar 30
|Presiding Days:||Mar 21, Jun 1, Aug 12, Oct 23, Jan 3|
3. Sitael (Mar 31 - Apr 4)
|Angel (genius):||Sitael | סיטאל|
|Attribute:||God, the hope of all creatures.|
|Governs:||10-15° of Aquarius (3rd quinant)|
Mar 31 - Apr 4
|Presiding Days:||Mar 22, Jun 2, Aug 13, Oct 24, Jan 4|